Mine-gate



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GEORGE G. LEWIS,

MINE- PATENT OFFICE.

OF ATHENS, OHIO.

GATE.

SPECIFICATION forming part of Letters Patent No. 595,880, dated December 21, 1897.

Application filed April 24, 1897.

' ,To all whom it may concern.-

Be it known that I, GEORGE G. Lnwis, a citizen of the United States, residing at Athens, in the county of Athens and State of Ohio, have invented certain new and useful Improvements in Mine-Gates; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My present invention relates to improvements in mine-gates, for which Letters Patent No. 576,460 were granted to me on February 2, 1897, and the object is to improve the construction and increase the efficiency of the same; and to these ends the novelty consists in the construction, combination, and arrangement of the same, as will be hereinafter more fully described, and particularly pointed out in the claims.

In the accompanying drawings the same reference characters indicate the same parts of the invention.

Figure 1 is a side elevation of my improved mine-gate with the gates closed. Fig. 2 is a similar View showing the gates open and locked in that position. Fig. 3 is a longitudinal section. Fig. 4 is a top plan view with the cross-brace connecting the gate-posts removed. Fig. 5 is atransverse section on the line of the gates. Fig. 6 is a detail perspective View of the lower end of one of the gateposts and a portion of the lower contiguous end of the gate, showing the position of the gate when closed. Fig. 7 is a similar view showing the gate open.

1 1 represent the vertical parallel gate-posts fixed in the transverse sill 2 and connected at their upper ends by the cross-brace 3.

4 4 represent the rails, and 5 5 represent the side bars, extending a short distance on each side of the outside of the track and parallel with the rails.

6 6 represent vertical shafts journaled in the sill 2 and cross-brace 3, contiguous to and parallel with said gate-posts andhavinga limited vertical movement in said sill and brace, and 7 7 represent the vertical gate-panels, fixed to said shafts and normally extending across the track to close the space between the posts.

8 represents a rectangular shaft provided $erial No. 633,739. (No model.)

with cylindrical journals 9 9, having a bearing in the side bars 5 5, and 10 10 represent weighted disks eccentrically fixed on said shaft 8, and each disk is provided with a vertical V- shaped arm 12,. which extends upwardly alongside the outside of the rails and into the path of the car-wheel when traveling over the track. The arm on the disk 10 is provided with a lateral retaining-stud 13, arranged to travel to and from and engage a detent 14 on avertical spring-arm 15, fixed on the inside of the side bar 5.

16 represents an integral ear on the free end of said spring-arm, to which is secured one end of the chain 17, the opposite end being connected to the upper end 18 of a weighted trip-lever 19, fulcrumed on a bolt 20, secured to the side of the contiguous rail 4.

21 21 represent parallel chains extending from the upper ends of the V-shaped arms 12 12 to the stud-bolts 22 22, fixed in the lower edge of the gate-panels 7 7 about midway between their free ends and the shafts 6 6'. A rectangular shaft 23 is also provided with cylindrical journals 24 24, having a bearing in the side bars 5 5, and 25 25 represent weighted disks eccentrically fixed on said shaft 23, and each disk is provided with a vertical integral V-shaped arm 26, which extends upwardly alongside the outside of the rails and into the path of the car-wheels. Each of these arms 26 26 is provided with a lateral stud 27, from which a connecting-rod 28 extends to the stud-bolts 22 22 on the gatepanels.

Parallel connecting-rods 29 and 30 extend from the lower ends of the Weighted disks 10 and 25 on one side of the track and the corresponding disks 10 25 on the other side, so that a motion communicated to one set of disks will be simultaneously transmitted to the other set and at the same time open the gates.

31 31 represent semicircular brackets fixed to the posts 3 3, and their upper faces are heart-shaped, being formed with inclinedupwardly-diverging edges 32 32.

33 33 represent friction-sleeves 'journaled on a rod 34, mounted in brackets 35, fixed to the lower edge of each gate-panel near their vertical shafts, and when the panels are closed the sleeves 33 rest in the bottom or lowest point between the diverging inclined edges 32 32, the weight of the gates retaining them in this position against the influence of drafts or unusual currents of air, and when the gates are opened the roller-sleeves ride up the inclined edges of the bracket 31, raising the gates with them, and when said gates are released they return to their normal position across the tracks by gravity, assisted by the weighted disks 1O and 25.

When a car approaches a gate in the direction of the arrow, the wheels depress the arms 26 26, and by means of the connecting-rods 28 28 swing the gate-panels open in the direction in which the car is moving. At the same time the parallel connecting-rods 29 and 30 throw the arms on the disks 10 10 forward,

and the stud 13 engages the detent l on the' spring-arm 15and locks the gate-panels in an open position, as shown in Fig. 2. After the car has passed through the gate the wheel strikes the projecting end 18 of the trip-lever 19, which releases the stud 13 from the detent 14, and the weighted disks restore the gate-panels to their normal position.

Although I have specifically described the construction and relative arrangement of the several elements of my invention, I do not desire to be confined to the same, as such changes or modifications may be made as clearly fall within the scope of my invention without departing from the spirit thereof.

Having thus fully described my invention, What I claim as new and useful, and desire to secure by Letters Patent of the United States, is-

1. An automatic gate, arranged transversely across arailway-track, an operating-arm pivoted in the path of the car traveling on said track, and in operative connection with said gate, a stud fixed on said arm, and a detent arranged in the path of said stud and adapted to engage said stud and lock the gate in an open position, substantially as shown and described.

path of said stud, a trip-lever projecting into the path of the car and in operative connection with said detent and adapted to release said retaining-stud by the movement of a passing car, substantially as shown and described.

3. The combination with the horizontal gatepanels, the weighted disks fixed on an oscillatin g shaft and provided with integral arms in operative connection with said gate-panels and with each other, and the retaining-stud fixed on one of said integral arms, of the detent arranged in the path of said retainingstud and adapted to engage the same and secure the gate-panels in an open position substantially as shown and described.

4. The railway-track, the pivoted gate-panels, extending across said track, the fixed side bars 5 5, extending parallel with said track, the rectangular shafts 8, and 23, journaled in said bars, the weighted disks 1O l0 and 25 25 eccentrically fixed on said shafts, and connected by the parallel rods 29 30, integral arms 12 and 26 fixed on said disks and projecting above said track into the path of the carwheels and in operative connection with said gate-panels, a lateral retaining-stud l3 fixed on the arm of the disk 10, the spring-arm 15 having an integral detent 14 projecting into the path of said stud 13, and the weighted trip-lever 19 projecting into the path of the car-wheels and in operative connection with said spring-arm 15, substantially as shown and described.

In testimony whereof I afiix my signature in presence of two witnesses.

GEORGE G. LEWIS.

Witnesses:

O. D. HOPKINS, BELLE M. Ross. 

